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am79900.c revision 1.21.4.1
      1 /*	$NetBSD: am79900.c,v 1.21.4.1 2010/05/30 05:17:20 rmind Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1997 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jason R. Thorpe.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 /*-
     33  * Copyright (c) 1992, 1993
     34  *	The Regents of the University of California.  All rights reserved.
     35  *
     36  * This code is derived from software contributed to Berkeley by
     37  * Ralph Campbell and Rick Macklem.
     38  *
     39  * Redistribution and use in source and binary forms, with or without
     40  * modification, are permitted provided that the following conditions
     41  * are met:
     42  * 1. Redistributions of source code must retain the above copyright
     43  *    notice, this list of conditions and the following disclaimer.
     44  * 2. Redistributions in binary form must reproduce the above copyright
     45  *    notice, this list of conditions and the following disclaimer in the
     46  *    documentation and/or other materials provided with the distribution.
     47  * 3. Neither the name of the University nor the names of its contributors
     48  *    may be used to endorse or promote products derived from this software
     49  *    without specific prior written permission.
     50  *
     51  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     52  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     53  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     54  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     55  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     56  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     57  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     58  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     59  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     60  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     61  * SUCH DAMAGE.
     62  *
     63  *	@(#)if_le.c	8.2 (Berkeley) 11/16/93
     64  */
     65 
     66 /*-
     67  * Copyright (c) 1998
     68  *	Matthias Drochner.  All rights reserved.
     69  * Copyright (c) 1995 Charles M. Hannum.  All rights reserved.
     70  *
     71  * This code is derived from software contributed to Berkeley by
     72  * Ralph Campbell and Rick Macklem.
     73  *
     74  * Redistribution and use in source and binary forms, with or without
     75  * modification, are permitted provided that the following conditions
     76  * are met:
     77  * 1. Redistributions of source code must retain the above copyright
     78  *    notice, this list of conditions and the following disclaimer.
     79  * 2. Redistributions in binary form must reproduce the above copyright
     80  *    notice, this list of conditions and the following disclaimer in the
     81  *    documentation and/or other materials provided with the distribution.
     82  * 3. All advertising materials mentioning features or use of this software
     83  *    must display the following acknowledgement:
     84  *	This product includes software developed by the University of
     85  *	California, Berkeley and its contributors.
     86  * 4. Neither the name of the University nor the names of its contributors
     87  *    may be used to endorse or promote products derived from this software
     88  *    without specific prior written permission.
     89  *
     90  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     91  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     92  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     93  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     94  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     95  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     96  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     97  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     98  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     99  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
    100  * SUCH DAMAGE.
    101  *
    102  *	@(#)if_le.c	8.2 (Berkeley) 11/16/93
    103  */
    104 
    105 #include <sys/cdefs.h>
    106 __KERNEL_RCSID(0, "$NetBSD: am79900.c,v 1.21.4.1 2010/05/30 05:17:20 rmind Exp $");
    107 
    108 #include "rnd.h"
    109 
    110 #include <sys/param.h>
    111 #include <sys/systm.h>
    112 #include <sys/mbuf.h>
    113 #include <sys/syslog.h>
    114 #include <sys/socket.h>
    115 #include <sys/device.h>
    116 #include <sys/malloc.h>
    117 #include <sys/ioctl.h>
    118 #include <sys/errno.h>
    119 #if NRND > 0
    120 #include <sys/rnd.h>
    121 #endif
    122 
    123 #include <net/if.h>
    124 #include <net/if_dl.h>
    125 #include <net/if_ether.h>
    126 #include <net/if_media.h>
    127 
    128 #include <net/bpf.h>
    129 #include <net/bpfdesc.h>
    130 
    131 #include <dev/ic/lancereg.h>
    132 #include <dev/ic/lancevar.h>
    133 #include <dev/ic/am79900reg.h>
    134 #include <dev/ic/am79900var.h>
    135 
    136 static void	am79900_meminit(struct lance_softc *);
    137 static void	am79900_start(struct ifnet *);
    138 
    139 #if defined(_KERNEL_OPT)
    140 #include "opt_ddb.h"
    141 #endif
    142 
    143 #ifdef LEDEBUG
    144 static void	am79900_recv_print(struct lance_softc *, int);
    145 static void	am79900_xmit_print(struct lance_softc *, int);
    146 #endif
    147 
    148 #define	ifp	(&sc->sc_ethercom.ec_if)
    149 
    150 void
    151 am79900_config(struct am79900_softc *sc)
    152 {
    153 	int mem, i;
    154 
    155 	sc->lsc.sc_meminit = am79900_meminit;
    156 	sc->lsc.sc_start = am79900_start;
    157 
    158 	lance_config(&sc->lsc);
    159 
    160 	mem = 0;
    161 	sc->lsc.sc_initaddr = mem;
    162 	mem += sizeof(struct leinit);
    163 	sc->lsc.sc_rmdaddr = mem;
    164 	mem += sizeof(struct lermd) * sc->lsc.sc_nrbuf;
    165 	sc->lsc.sc_tmdaddr = mem;
    166 	mem += sizeof(struct letmd) * sc->lsc.sc_ntbuf;
    167 	for (i = 0; i < sc->lsc.sc_nrbuf; i++, mem += LEBLEN)
    168 		sc->lsc.sc_rbufaddr[i] = mem;
    169 	for (i = 0; i < sc->lsc.sc_ntbuf; i++, mem += LEBLEN)
    170 		sc->lsc.sc_tbufaddr[i] = mem;
    171 
    172 	if (mem > sc->lsc.sc_memsize)
    173 		panic("%s: memsize", device_xname(sc->lsc.sc_dev));
    174 }
    175 
    176 /*
    177  * Set up the initialization block and the descriptor rings.
    178  */
    179 static void
    180 am79900_meminit(struct lance_softc *sc)
    181 {
    182 	u_long a;
    183 	int bix;
    184 	struct leinit init;
    185 	struct lermd rmd;
    186 	struct letmd tmd;
    187 	uint8_t *myaddr;
    188 
    189 	if (ifp->if_flags & IFF_PROMISC)
    190 		init.init_mode = LE_MODE_NORMAL | LE_MODE_PROM;
    191 	else
    192 		init.init_mode = LE_MODE_NORMAL;
    193 	if (sc->sc_initmodemedia == 1)
    194 		init.init_mode |= LE_MODE_PSEL0;
    195 
    196 	init.init_mode |= ((ffs(sc->sc_ntbuf) - 1) << 28)
    197 	  | ((ffs(sc->sc_nrbuf) - 1) << 20);
    198 
    199 	/*
    200 	 * Update our private copy of the Ethernet address.
    201 	 * We NEED the copy so we can ensure its alignment!
    202 	 */
    203 	memcpy(sc->sc_enaddr, CLLADDR(ifp->if_sadl), ETHER_ADDR_LEN);
    204 	myaddr = sc->sc_enaddr;
    205 
    206 	init.init_padr[0] = myaddr[0] | (myaddr[1] << 8)
    207 	  | (myaddr[2] << 16) | (myaddr[3] << 24);
    208 	init.init_padr[1] = myaddr[4] | (myaddr[5] << 8);
    209 	lance_setladrf(&sc->sc_ethercom, init.init_ladrf);
    210 
    211 	sc->sc_last_rd = 0;
    212 	sc->sc_first_td = sc->sc_last_td = sc->sc_no_td = 0;
    213 
    214 	a = sc->sc_addr + LE_RMDADDR(sc, 0);
    215 	init.init_rdra = a;
    216 
    217 	a = sc->sc_addr + LE_TMDADDR(sc, 0);
    218 	init.init_tdra = a;
    219 
    220 	(*sc->sc_copytodesc)(sc, &init, LE_INITADDR(sc), sizeof(init));
    221 
    222 	/*
    223 	 * Set up receive ring descriptors.
    224 	 */
    225 	for (bix = 0; bix < sc->sc_nrbuf; bix++) {
    226 		a = sc->sc_addr + LE_RBUFADDR(sc, bix);
    227 		rmd.rmd0 = a;
    228 		rmd.rmd1 = LE_R1_OWN | LE_R1_ONES | (-LEBLEN & 0xfff);
    229 		rmd.rmd2 = 0;
    230 		rmd.rmd3 = 0;
    231 		(*sc->sc_copytodesc)(sc, &rmd, LE_RMDADDR(sc, bix),
    232 		    sizeof(rmd));
    233 	}
    234 
    235 	/*
    236 	 * Set up transmit ring descriptors.
    237 	 */
    238 	for (bix = 0; bix < sc->sc_ntbuf; bix++) {
    239 		a = sc->sc_addr + LE_TBUFADDR(sc, bix);
    240 		tmd.tmd0 = a;
    241 		tmd.tmd1 = LE_T1_ONES;
    242 		tmd.tmd2 = 0;
    243 		tmd.tmd3 = 0;
    244 		(*sc->sc_copytodesc)(sc, &tmd, LE_TMDADDR(sc, bix),
    245 		    sizeof(tmd));
    246 	}
    247 }
    248 
    249 static inline void
    250 am79900_rint(struct lance_softc *sc)
    251 {
    252 	int bix;
    253 	int rp;
    254 	struct lermd rmd;
    255 
    256 	bix = sc->sc_last_rd;
    257 
    258 	/* Process all buffers with valid data. */
    259 	for (;;) {
    260 		rp = LE_RMDADDR(sc, bix);
    261 		(*sc->sc_copyfromdesc)(sc, &rmd, rp, sizeof(rmd));
    262 
    263 		if (rmd.rmd1 & LE_R1_OWN)
    264 			break;
    265 
    266 		if (rmd.rmd1 & LE_R1_ERR) {
    267 			if (rmd.rmd1 & LE_R1_ENP) {
    268 #ifdef LEDEBUG
    269 				if ((rmd.rmd1 & LE_R1_OFLO) == 0) {
    270 					if (rmd.rmd1 & LE_R1_FRAM)
    271 						printf("%s: framing error\n",
    272 						    device_xname(sc->sc_dev));
    273 					if (rmd.rmd1 & LE_R1_CRC)
    274 						printf("%s: crc mismatch\n",
    275 						    device_xname(sc->sc_dev));
    276 				}
    277 #endif
    278 			} else {
    279 				if (rmd.rmd1 & LE_R1_OFLO)
    280 					printf("%s: overflow\n",
    281 					    device_xname(sc->sc_dev));
    282 			}
    283 			if (rmd.rmd1 & LE_R1_BUFF)
    284 				printf("%s: receive buffer error\n",
    285 				    device_xname(sc->sc_dev));
    286 			ifp->if_ierrors++;
    287 		} else if ((rmd.rmd1 & (LE_R1_STP | LE_R1_ENP)) !=
    288 		    (LE_R1_STP | LE_R1_ENP)) {
    289 			printf("%s: dropping chained buffer\n",
    290 			    device_xname(sc->sc_dev));
    291 			ifp->if_ierrors++;
    292 		} else {
    293 #ifdef LEDEBUG
    294 			if (sc->sc_debug)
    295 				am79900_recv_print(sc, sc->sc_last_rd);
    296 #endif
    297 			lance_read(sc, LE_RBUFADDR(sc, bix),
    298 				   (rmd.rmd2  & 0xfff) - 4);
    299 		}
    300 
    301 		rmd.rmd1 = LE_R1_OWN | LE_R1_ONES | (-LEBLEN & 0xfff);
    302 		rmd.rmd2 = 0;
    303 		rmd.rmd3 = 0;
    304 		(*sc->sc_copytodesc)(sc, &rmd, rp, sizeof(rmd));
    305 
    306 #ifdef LEDEBUG
    307 		if (sc->sc_debug)
    308 			printf("sc->sc_last_rd = %x, rmd: "
    309 			       "adr %08x, flags/blen %08x\n",
    310 				sc->sc_last_rd,
    311 				rmd.rmd0, rmd.rmd1);
    312 #endif
    313 
    314 		if (++bix == sc->sc_nrbuf)
    315 			bix = 0;
    316 	}
    317 
    318 	sc->sc_last_rd = bix;
    319 }
    320 
    321 static inline void
    322 am79900_tint(struct lance_softc *sc)
    323 {
    324 	int bix;
    325 	struct letmd tmd;
    326 
    327 	bix = sc->sc_first_td;
    328 
    329 	for (;;) {
    330 		if (sc->sc_no_td <= 0)
    331 			break;
    332 
    333 		(*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, bix),
    334 		    sizeof(tmd));
    335 
    336 #ifdef LEDEBUG
    337 		if (sc->sc_debug)
    338 			printf("trans tmd: "
    339 			    "adr %08x, flags/blen %08x\n",
    340 			    tmd.tmd0, tmd.tmd1);
    341 #endif
    342 
    343 		if (tmd.tmd1 & LE_T1_OWN)
    344 			break;
    345 
    346 		ifp->if_flags &= ~IFF_OACTIVE;
    347 
    348 		if (tmd.tmd1 & LE_T1_ERR) {
    349 			if (tmd.tmd2 & LE_T2_BUFF)
    350 				printf("%s: transmit buffer error\n",
    351 				    device_xname(sc->sc_dev));
    352 			else if (tmd.tmd2 & LE_T2_UFLO)
    353 				printf("%s: underflow\n",
    354 				    device_xname(sc->sc_dev));
    355 			if (tmd.tmd2 & (LE_T2_BUFF | LE_T2_UFLO)) {
    356 				lance_reset(sc);
    357 				return;
    358 			}
    359 			if (tmd.tmd2 & LE_T2_LCAR) {
    360 				sc->sc_havecarrier = 0;
    361 				if (sc->sc_nocarrier)
    362 					(*sc->sc_nocarrier)(sc);
    363 				else
    364 					printf("%s: lost carrier\n",
    365 					    device_xname(sc->sc_dev));
    366 			}
    367 			if (tmd.tmd2 & LE_T2_LCOL)
    368 				ifp->if_collisions++;
    369 			if (tmd.tmd2 & LE_T2_RTRY) {
    370 #ifdef LEDEBUG
    371 				printf("%s: excessive collisions\n",
    372 				    device_xname(sc->sc_dev));
    373 #endif
    374 				ifp->if_collisions += 16;
    375 			}
    376 			ifp->if_oerrors++;
    377 		} else {
    378 			if (tmd.tmd1 & LE_T1_ONE)
    379 				ifp->if_collisions++;
    380 			else if (tmd.tmd1 & LE_T1_MORE)
    381 				/* Real number is unknown. */
    382 				ifp->if_collisions += 2;
    383 			ifp->if_opackets++;
    384 		}
    385 
    386 		if (++bix == sc->sc_ntbuf)
    387 			bix = 0;
    388 
    389 		--sc->sc_no_td;
    390 	}
    391 
    392 	sc->sc_first_td = bix;
    393 
    394 	am79900_start(ifp);
    395 
    396 	if (sc->sc_no_td == 0)
    397 		ifp->if_timer = 0;
    398 }
    399 
    400 /*
    401  * Controller interrupt.
    402  */
    403 int
    404 am79900_intr(void *arg)
    405 {
    406 	struct lance_softc *sc = arg;
    407 	uint16_t isr;
    408 
    409 	isr = (*sc->sc_rdcsr)(sc, LE_CSR0) | sc->sc_saved_csr0;
    410 	sc->sc_saved_csr0 = 0;
    411 #if defined(LEDEBUG) && LEDEBUG > 1
    412 	if (sc->sc_debug)
    413 		printf("%s: am79900_intr entering with isr=%04x\n",
    414 		    device_xname(sc->sc_dev), isr);
    415 #endif
    416 	if ((isr & LE_C0_INTR) == 0)
    417 		return (0);
    418 
    419 	(*sc->sc_wrcsr)(sc, LE_CSR0,
    420 	    isr & (LE_C0_INEA | LE_C0_BABL | LE_C0_MISS | LE_C0_MERR |
    421 		   LE_C0_RINT | LE_C0_TINT | LE_C0_IDON));
    422 	if (isr & LE_C0_ERR) {
    423 		if (isr & LE_C0_BABL) {
    424 #ifdef LEDEBUG
    425 			printf("%s: babble\n", device_xname(sc->sc_dev));
    426 #endif
    427 			ifp->if_oerrors++;
    428 		}
    429 #if 0
    430 		if (isr & LE_C0_CERR) {
    431 			printf("%s: collision error\n",
    432 			    device_xname(sc->sc_dev));
    433 			ifp->if_collisions++;
    434 		}
    435 #endif
    436 		if (isr & LE_C0_MISS) {
    437 #ifdef LEDEBUG
    438 			printf("%s: missed packet\n", device_xname(sc->sc_dev));
    439 #endif
    440 			ifp->if_ierrors++;
    441 		}
    442 		if (isr & LE_C0_MERR) {
    443 			printf("%s: memory error\n", device_xname(sc->sc_dev));
    444 			lance_reset(sc);
    445 			return (1);
    446 		}
    447 	}
    448 
    449 	if ((isr & LE_C0_RXON) == 0) {
    450 		printf("%s: receiver disabled\n", device_xname(sc->sc_dev));
    451 		ifp->if_ierrors++;
    452 		lance_reset(sc);
    453 		return (1);
    454 	}
    455 	if ((isr & LE_C0_TXON) == 0) {
    456 		printf("%s: transmitter disabled\n", device_xname(sc->sc_dev));
    457 		ifp->if_oerrors++;
    458 		lance_reset(sc);
    459 		return (1);
    460 	}
    461 
    462 	/*
    463 	 * Pretend we have carrier; if we don't this will be cleared
    464 	 * shortly.
    465 	 */
    466 	sc->sc_havecarrier = 1;
    467 
    468 	if (isr & LE_C0_RINT)
    469 		am79900_rint(sc);
    470 	if (isr & LE_C0_TINT)
    471 		am79900_tint(sc);
    472 
    473 #if NRND > 0
    474 	rnd_add_uint32(&sc->rnd_source, isr);
    475 #endif
    476 
    477 	return (1);
    478 }
    479 
    480 #undef	ifp
    481 
    482 /*
    483  * Setup output on interface.
    484  * Get another datagram to send off of the interface queue, and map it to the
    485  * interface before starting the output.
    486  * Called only at splnet or interrupt level.
    487  */
    488 static void
    489 am79900_start(struct ifnet *ifp)
    490 {
    491 	struct lance_softc *sc = ifp->if_softc;
    492 	int bix;
    493 	struct mbuf *m;
    494 	struct letmd tmd;
    495 	int rp;
    496 	int len;
    497 
    498 	if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING)
    499 		return;
    500 
    501 	bix = sc->sc_last_td;
    502 
    503 	for (;;) {
    504 		rp = LE_TMDADDR(sc, bix);
    505 		(*sc->sc_copyfromdesc)(sc, &tmd, rp, sizeof(tmd));
    506 
    507 		if (tmd.tmd1 & LE_T1_OWN) {
    508 			ifp->if_flags |= IFF_OACTIVE;
    509 			printf("missing buffer, no_td = %d, last_td = %d\n",
    510 			    sc->sc_no_td, sc->sc_last_td);
    511 		}
    512 
    513 		IFQ_DEQUEUE(&ifp->if_snd, m);
    514 		if (m == 0)
    515 			break;
    516 
    517 		/*
    518 		 * If BPF is listening on this interface, let it see the packet
    519 		 * before we commit it to the wire.
    520 		 */
    521 		bpf_mtap(ifp, m);
    522 
    523 		/*
    524 		 * Copy the mbuf chain into the transmit buffer.
    525 		 */
    526 		len = lance_put(sc, LE_TBUFADDR(sc, bix), m);
    527 
    528 #ifdef LEDEBUG
    529 		if (len > ETHERMTU + sizeof(struct ether_header))
    530 			printf("packet length %d\n", len);
    531 #endif
    532 
    533 		ifp->if_timer = 5;
    534 
    535 		/*
    536 		 * Init transmit registers, and set transmit start flag.
    537 		 */
    538 		tmd.tmd1 = LE_T1_OWN | LE_T1_STP | LE_T1_ENP | LE_T1_ONES | (-len & 0xfff);
    539 		tmd.tmd2 = 0;
    540 		tmd.tmd3 = 0;
    541 
    542 		(*sc->sc_copytodesc)(sc, &tmd, rp, sizeof(tmd));
    543 
    544 #ifdef LEDEBUG
    545 		if (sc->sc_debug)
    546 			am79900_xmit_print(sc, sc->sc_last_td);
    547 #endif
    548 
    549 		(*sc->sc_wrcsr)(sc, LE_CSR0, LE_C0_INEA | LE_C0_TDMD);
    550 
    551 		if (++bix == sc->sc_ntbuf)
    552 			bix = 0;
    553 
    554 		if (++sc->sc_no_td == sc->sc_ntbuf) {
    555 			ifp->if_flags |= IFF_OACTIVE;
    556 			break;
    557 		}
    558 
    559 	}
    560 
    561 	sc->sc_last_td = bix;
    562 }
    563 
    564 #ifdef LEDEBUG
    565 static void
    566 am79900_recv_print(struct lance_softc *sc, int no)
    567 {
    568 	struct lermd rmd;
    569 	uint16_t len;
    570 	struct ether_header eh;
    571 
    572 	(*sc->sc_copyfromdesc)(sc, &rmd, LE_RMDADDR(sc, no), sizeof(rmd));
    573 	len = (rmd.rmd2  & 0xfff) - 4;
    574 	printf("%s: receive buffer %d, len = %d\n",
    575 	    device_xname(sc->sc_dev), no, len);
    576 	printf("%s: status %04x\n", device_xname(sc->sc_dev),
    577 	    (*sc->sc_rdcsr)(sc, LE_CSR0));
    578 	printf("%s: adr %08x, flags/blen %08x\n",
    579 	    device_xname(sc->sc_dev), rmd.rmd0, rmd.rmd1);
    580 	if (len >= sizeof(eh)) {
    581 		(*sc->sc_copyfrombuf)(sc, &eh, LE_RBUFADDR(sc, no), sizeof(eh));
    582 		printf("%s: dst %s", device_xname(sc->sc_dev),
    583 			ether_sprintf(eh.ether_dhost));
    584 		printf(" src %s type %04x\n", ether_sprintf(eh.ether_shost),
    585 			ntohs(eh.ether_type));
    586 	}
    587 }
    588 
    589 static void
    590 am79900_xmit_print(struct lance_softc *sc, int no)
    591 {
    592 	struct letmd tmd;
    593 	uint16_t len;
    594 	struct ether_header eh;
    595 
    596 	(*sc->sc_copyfromdesc)(sc, &tmd, LE_TMDADDR(sc, no), sizeof(tmd));
    597 	len = -(tmd.tmd1 & 0xfff);
    598 	printf("%s: transmit buffer %d, len = %d\n",
    599 	    device_xname(sc->sc_dev), no, len);
    600 	printf("%s: status %04x\n", device_xname(sc->sc_dev),
    601 	    (*sc->sc_rdcsr)(sc, LE_CSR0));
    602 	printf("%s: adr %08x, flags/blen %08x\n",
    603 	    device_xname(sc->sc_dev), tmd.tmd0, tmd.tmd1);
    604 	if (len >= sizeof(eh)) {
    605 		(*sc->sc_copyfrombuf)(sc, &eh, LE_TBUFADDR(sc, no), sizeof(eh));
    606 		printf("%s: dst %s", device_xname(sc->sc_dev),
    607 			ether_sprintf(eh.ether_dhost));
    608 		printf(" src %s type %04x\n", ether_sprintf(eh.ether_shost),
    609 		    ntohs(eh.ether_type));
    610 	}
    611 }
    612 #endif /* LEDEBUG */
    613